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Key to families | Table of families and genera
Specimen numbers are hyperlinked to records in the Consortium of California Herbaria data view where possible. Taxa are hyperlinked to entries in the Jepson Interchange via the "[Online Interchange]" link.
Perennial herb from scaly rhizomes or glabrous stolons; dioecious (monoecious). Stem: matted (< 5 cm) to ascending and erect (<= 80 cm), stiff, glabrous, solid in ×-section. Leaf: conspicuously 2-ranked; ligule membranous or fringed; blade flat or ± rolled, if short awl-like, generally glabrous, occasionally with hairy tufts at collar. Inflorescence: panicle- or raceme-like (a single spikelet); spikelets short-pedicelled (sessile), staminate inflorescence sometimes above leaves. Spikelet: unisexual; pistillate generally = staminate, generally laterally compressed; glumes unequal (0), firm, awns 0, lower 3(5)-veined, upper 5–7(9)-veined; axis breaking above glumes and between florets; florets 3–20; lemma wide narrowing to acuminate tip, 7–11-veined, awn 0; palea < or > lemma; keel minutely hairy or scabrous.
9 species: North America, South America, 1 sp. in Australia. (Greek: in 2 rows, from leaf arrangement) [Beetle 1943 Bull Torr Bot Club 70:638–650; Bell & Columbus 2008 Syst Bot 33:536–551]
1. Blade < 1.5 cm, awl-like; spikelet 1 per inflorescence; glumes 0 ..... D. littoralis
1' Blade > 1.5 cm, flat; spikelets 2–20 per inflorescence; glumes 2 ..... D. spicata
Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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